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Yugoslavia JUS C4739 Steels for nitriding and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: C4739 / C 4739
Category Grade Standard Region/Area Standard Content
Metals C 4739 -- Yugoslavia Steels for nitriding

Chemical composition(mass fraction)(wt.%) of the C 4739

Element Min Max Similar
Si 0.2000 0.5000 -
Mo 0.1500 0.2500 -
Mn 0.5000 0.8000 -
Cr 1.0000 1.3000 -
C 0.3000 0.3700 -
Al 0.8000 1.2000 -

Mechanical Properties of steel grade C 4739

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
411 (≥) 315 (≥) 44 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade C 4739

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
23 - -     0.24 -  
882 828 - 12.3 421   -  
466 - 21 33.2   111 122

Heat Treatment of steel grade C 4739

Heat treated : 1664°C - 1318°C

Technological Curves of steel grade C 4739

Cross Reference Table (Equivalent Grade) of C 4739

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